Grate and ash-pit for furnaces.



0. SMITH.

'GRATH AND ASH PIT FOB Humans, AlPPLIOATION FILED JAN. 29,1906.

908,510. Patented Jan. 5, 1909.

' fig! 1n: NORRIS PETERS cm, WASHINGTON, D. c

UNITED STATES PATENT OFFICE.

CHARLES SMITH, OF CHICAGO, ILLINOIS, ASSIGNOR TO CHARLES SMITH COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

GRATE AND ASH-PIT FOR FURNACES.

Specification of Letters Patent.

Patented Jan. 5, 1909.

To all whom it may concern:

Be it known that I, CnARLEs SMITH, a citizen of the United States, residing in Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Grates and Ash-Pits for Furnaces, of which the following is a specification.

My invention relates to improvements in grates and ash pits for furnaces and other heaters.

The object of my invention is to provide a grate and ash it for furnaces and other heaters, which Wil i be of a simple, eflicient and durable construction and in which the grate bars may be independently and easily and quickly removed.

My invention consists in the means I employ to practically accomplish this object or result. That is to say, it consists in connection with an ash pit having at its inner or rear end a series of separate sockets or bearings to receive the inner or rear ends of a se ries of independently operative and independently removable grate bars, and provided at its front portion with a grate sup porting bar furnished with a plurality of seats or slots, to receive a plurality of independently removable bearing blocks, and movable holders or keepers for holding the removable bearing blocks in place, and a plurality of independently operative and inde pendently removable grate bars.

My invention also consists in the novel construction of parts and devices and in the novel combinations of parts and devices herein shown and described.

In the accompanying drawing forming a part of this specification, Figure 1 is a plan view of an ash pit and grate embodying my invention. Fig. 2 is a partial vertical section on line 22 of Fig. 1. Fig. 3 is a detail cross section on line 33 of Fig. 2. Fig. 4 is an enlarged detail cross sectional view showing the removable bearing blocks for the front ends of the grate bars. Fig. 5 is a detail perspective view of one of the bearing blocks and Fig. 6 is a detail section on line 66 of Fig. 4.

In the drawing, A represents the ash pit of the furnace or heater, its back wall a being provided with a series of separate sockets or bearings a to receive and support the rear ends I) of a series of independently operative and independently removable grate bars B. The ash pit is also provided at its front portion with a grate supporting bar D, the same being preferably in a separate piece from the top plate a of the ash pit, and secured thereto by screws or bolts d. The grate support D is furnished with a series of seats or slots (1 having shoulders or flanges (Z to receive and support a series of independent and individually removable bearing blocks F, the same being preferably of a U shape as indicated in the drawing, and which receive and support the grate bar shaft 5 Each of the grate bars B or its shaft l) is furnished with a collar 6 preferably integral therewith, which bears against the inner face of the bearing block F and thus holds the grate bar longitudinally in position.

The removable grate bar bearing blocks F are held in place by movable holders or keepers G, preferably pivotally secured to the bar D by a rivet or pin g. The series of movable or pivotal holders or keepers G serve to hold the bearing blocks F in place, while at the same time permitting any one of them to be readily removed by simply turning the button or holder G on its pivot. When the removable bearing block F is removed, the collar b on the grate bar B will pass through the slot or recess (1 in the bar D and thus permit the grate bar B to be sli ped longitudinally forward sufficiently to re ease its rear end I) from the bearing a in the rear wall a of the ash pit A and thus permit the rear end of the grate bar to drop down and assume a diagonal position in the ash pit as indicated by the dotted lines in Fig. 2, when the front end of the grate bar shaft can be pushed or slipped through the opening a in the front wall a of the ash pit or furnace, thus disengaging the grate bar when it may be entirely removed through the door a of the ash pit. In my improved grate and ash pit thus each and every one of the grate bars B B B B are not only separately and independently operative, but are also separately and indeendently removable. Each of the grate liars can be thus removed very easily and quickly by simply turning the holder or keeper G and then moving its separate and independently removable bearing block F.

I claim:

1. In a furnace or heater, the combination with the ashpit having a rear wall furnished with inde endent sockets to receive the rear ends of the grate bars, and having a front wall furnished with openings through which the front ends of the grate bar shafts extend, of a series of independently operative and independently removable grate bars and a series of independently removable bearing blocks between the front and rear walls of the ashpit to support the front ends of the grate bars and enable each to be separately and independently removed, said grate bars being inwardly withdrawable from said 0 enings in the front wall of the ashpit W en their rear ends are lowered so that the grate bars occupy a diagonal position, sub stantially as s ecilied.

2. The com ination with an ash pit, having 'a rear wall furnished with independent sockets to receive the rear ends of the grate bars, and having a front wall furnished with openings therein through which the front ends of the grate bar shafts extend, of a series of independently removable grate bars, a su orting bar between the front and rear wa s of the ash pit, furnished with a series of slots or seats to receive independently removable bearing blocks and a series of independently removable bearing blocks fitting 1n the slots or seats of said supporting bar, said grate bars being inwardly withdrawable from said openings in the front wall of the ash pit when their rear ends are lowered so that the grate bars occupy a diagonal position, substantially as specified.

3. The combination with an ash pit having a rear wall furnished with independent sockets to receive the rear ends of grate bars, and having a front wall furnished with openings through which the grate bar shafts extend at their front ends, a plurality of individually removable grate bars, a supporting bar therefor furnished with recesses to receive removable bearing blocks, and a plurality of removable bearing blocks fitting in the recesses of said supporting bar, said grate bars being inwardly withdrawable from the openings in the front wall of said ash pit when their rear ends are lowered so that the grate bars occupy a diagonal position, substantially-as s ecified. t

4. The com ination with an ash pit having a rear wall furnished with independent sockets to receive the rear ends of grate bars and having a front wall furnished with openings through which the grate bar shafts extend at their front ends, a plurality of individually removable grate bars, a supporting bar therefor, furnished with recesses to re ceive removable bearing blocks, a plurality of removable bearing blocks fitting in the recesses of said su porting bar and movable keepers for holding said bearing blocks in place, said grate bars being inwardly withdrawable from the openings in said front wall of said ash pit when their rear ends are lowered so that the grate bars occupy a diagonal position, substantially as specified.

5. The combination with an ash pit having a rear wall furnished with independent sockets to receive the rear ends of grate bars, and having a front wall furnished with a plurality of o enings through which the grate bars exten at their front ends, of a plurality of individually removable grate bars, a supporting bar therefor furnished with recesses to receive removable bearing blocks, a plurality of removable bearing blocks fittingin the recesses of said supporting bar and movable keepers for holding the bearing blocks in place, the shafts of each of said grate bars bemg furnished with collars to engage the bearing blocks and prevent longitudinal n1ove ment of the grate bars unless the bearing blocks are first removed, said grate bars being inwardly withdrawable from the 0 en ings in said front wall of the ash it when t eir rear ends are lowered so that t e grate bars occupy a diagonal position, substantially as specified.

CHARLES SMITH. Witnesses H. M. MUNDAY, PEARL ABRAMS. 

